Instructions / Assembly

5
INSPECT ROUGH OPENING (R.O.)
2
A
D
C
E
B
Installation Instructions
for Vinyl Windows without Nailing Fin (JII011)
• Verify the width and height of the rough opening is 1/2" larger than
the window width and height. Openings for mulled units should be
3/4" larger than the window width and height.
• Verify the rough opening
is square. The (A) and (B)
measurements should be the
same. Suggested deviation
from square is no more
than1/4".
• Verify the rough opening is
level and plumb (C, D and
E). Suggested deviation from
square is no more than 1/8".
• The rough opening sill should
not be crowned or sagged
(D), but rather level or sloped
(positive slope) to the exterior.
• The exterior face of the rough opening should be in a single plane (E)
with less than 1/8" twist from corner to corner.
For Retrot Installations
Verify the rough opening framing is structurally sound. Contact your local
waste management entities for proper disposal or recycling of products
being removed.
This installation guide only addresses masonry/block wall,
sheathed wall, open-stud construction and existing window frame.
If installing into an opening other than what is identied, consult a
building professional.
Masonry/Block Wall Construction
This installation assumes
that a framework of studs
(often called a buck) has
already been properly
fastened in a weatherproof
manner to the concrete/
masonry wall. The window
will be mounted to the buck
in a weatherproof manner.
Verify Square, Level and Plumb
Fully Sheathed Wall Construction
Sheathing is applied to
the exterior of the wall
framing. The window
will be mounted into
the rough opening in a
weatherproofmanner.
Open-Stud Construction
Sheathing is absent
and building wrap is
applied atop of the wall
framing. The window
will be mounted into
the rough opening in a
weatherproofmanner.
Existing Window Frame Installation
The existing window
frame is left in place
and the window will be
installed into the frame in a
weatherproof manner.
Buck
Header
Trimmer
studs
Sheathing
King
stud
Existing
window frame